diff --git a/authority/provisioner/acme.go b/authority/provisioner/acme.go
index e414410b..abeedaf1 100644
--- a/authority/provisioner/acme.go
+++ b/authority/provisioner/acme.go
@@ -15,6 +15,7 @@ type ACME struct {
 	Type    string  `json:"type"`
 	Name    string  `json:"name"`
 	Claims  *Claims `json:"claims,omitempty"`
+	ForceCN bool    `json:"forceCN,omitempty"`
 	claimer *Claimer
 }